Carriage for drop-down mask assembly



FIG. 1 is a perspective view of a carriage for drop-down mask assembly showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a bottom view thereof.

The broken line showing in FIGS. 1, 2, 3, 4 and 6 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a carriage for drop-down mask assembly, as shown and described. 